Exhibit 99.1

                 ISSI REVISES GUIDANCE FOR DECEMBER 2004 QUARTER

               SCHEDULES QUARTERLY CONFERENCE CALL FOR JANUARY 25

     SANTA CLARA, Calif., Jan. 3 /PRNewswire-FirstCall/ -- Integrated Silicon
Solution, Inc. (Nasdaq: ISSI), announced today that it expects its revenue for
the December 2004 quarter will be lower than the Company's previous guidance
provided on October 28, 2004. The Company now expects that revenue for the
December 2004 quarter will be in the range of approximately $30.0 million to
$31.0 million. Further, the Company expects to report a loss for the quarter.

     "Our low and medium density DRAM family saw continuing pricing pressure
throughout the quarter to a degree greater than we expected," said Jimmy Lee,
Chairman and CEO. "We believe this is the result of too much inventory in the
channel."

     ISSI has scheduled its regularly held quarterly conference call for
Tuesday, January 25, 2005 at 1:30 p.m. Pacific time to discuss the company's
financial results for the quarter ended December 31, 2004. If you plan to
participate in the call, please RSVP either by telephone at 408-969-4774 or by
email to ir@issi.com. The call will be webcast from ISSI's website at
www.issi.com. No separate conference call will be held in conjunction with
today's release.

     About ISSI
     ISSI is a fabless semiconductor company that designs and markets high
performance integrated circuits for the following key markets: (i) digital
consumer electronics, (ii) networking, (iii) mobile communications and (iv)
automotive electronics. The Company's primary products are high speed and low
power SRAM and low and medium density DRAM. The Company also designs and markets
EEPROM, SmartCards and is developing selected non-memory products focused on its
key markets. ISSI is headquartered in Silicon Valley with worldwide offices in
China, Europe, Hong Kong, India, Korea and Taiwan. Visit our web site at
www.issi.com.

     Safe Harbor Statement
     The statements in this press release regarding our estimated December 2004
quarter revenue and earnings/loss, DRAM pricing pressure and inventory in the
channel are forward-looking statements that are subject to risks. Actual results
may differ materially from current expectations due to many factors, including
adverse changes in market conditions, further reductions in average selling
prices, reductions in book value of our inventory, the Company's inability to
effectively reduce expenses, manufacturing yields, order cancellations, order
rescheduling, decreasing demand, product warranty claims, product returns,
competition, the level and value of inventory held by OEM customers or the
Company, completion of our financial statements for the December 2004 quarter,
or other factors. Stockholders of ISSI are cautioned not to place undue reliance
on our forward-looking statements, which speak only as of the date such
statements are made. ISSI does not undertake any obligation to publicly update
any forward-looking statements to reflect



events, circumstances, or new information after this January 3, 2005 press
release, or to reflect the occurrence of unanticipated events. Further
information that could affect the Company's results is detailed in ISSI's
periodic filings with the Securities and Exchange Commission, including its
Annual Report on Form 10K for the fiscal year ended September 30, 2004.

SOURCE  Integrated Silicon Solution, Inc.
     -0-                             01/03/2005
     /CONTACT:  Suzanne Weaver, Investor Relations, +1-408-969-4774, or
ir@issi.com, or Gary L. Fischer, President & COO, +1-408-969-4612, or
ir@issi.com, both of ISSI/
     /Web site:  http://www.issi.com /
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